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@article{RSM_2002__60_3_116635, author = {Salvai, M.}, title = {On the energy of sections of trivializable sphere bundles.}, journal = {Rendiconti del seminario matematico}, pages = {147--155}, publisher = {mathdoc}, volume = {60}, number = {3}, year = {2002}, zbl = {1177.53035}, language = {en}, url = {http://geodesic.mathdoc.fr/item/RSM_2002__60_3_116635/} }
Salvai, M. On the energy of sections of trivializable sphere bundles.. Rendiconti del seminario matematico, Tome 60 (2002) no. 3, pp. 147-155. http://geodesic.mathdoc.fr/item/RSM_2002__60_3_116635/